Y 4x 9 y x 3 July 8, 2019 16 32 64 128 Y 4x 9 y x 3 substitution Solve y 4x 9 y x 3 Solve each system by substitution y 4x 9 y x 3 4x y 9 x 3y 16 A system of linear equations is y= 4x- 9 and y= x-3. what is the solution to this system